I am a signal engineer on the British mainline network, for my sins I also am a signal engineer on some local heritage railways too,my reasons for doing the books are partly that with my parents living in Ireland I get to travel round by train a lot and see the signalling there and also because as time progresses it becomes rarer and rarer with modernisation,so this is an attempt to capture both the old and the new and try to put into writing and pictures the more interesting or unusual aspects of railway signalling in Eire.